Home / 42,578.42-63,867.30-10,985.79

Finding the Fourth Proportional to 42,578.42, 63,867.30 and 10,985.79

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Solution

The fourth proportional to 42,578.42, 63,867.30 and 10,985.79 is: 16,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,578.42 : 63,867.30 = 10,985.79 : x
  2. Step 2: Convert to fraction form
    42,578.42/63,867.30 = 10,985.79/x
  3. Step 3: Cross multiply
    42,578.42x = 63,867.30 × 10,985.79
  4. Step 4: Simplify right side
    42,578.42x = 701,632,745.67
  5. Step 5: Solve for x
    x = 701,632,745.67/42,578.42
  6. Step 6: Final answer
    x = 16,478.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.